Thursday - Ten years ago, in the United States, legislation to cut greenhouse gas emissions from power plants by 80 per cent and to introduce a cap-and-trade scheme on emissions was making its way through the country’s Lower House.

17 May 19 - Ten years ago, the Government announced it was making $36 million available in subsidies for biodiesel, after earlier discontinuing the Biofuels Act requiring oil companies to sell a minimum amount of biofuels.

6 May 19 - Ten years ago, Australia announced plans to delay the introduction of carbon pricing until 2011 – but New Zealand was still keen to harmonise emissions trading schemes on both sides of the Tasman.

3 May 19 - Ten years ago, the farming sector was split over how New Zealand should deal with agricultural emissions, with Federated Farmers pushing for a carbon tax and the meat industry saying the Emissions...